diff options
Diffstat (limited to 'mysql-test/t/information_schema2.test')
| -rw-r--r-- | mysql-test/t/information_schema2.test | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/mysql-test/t/information_schema2.test b/mysql-test/t/information_schema2.test index c2479087f47..d577cdc1e4d 100644 --- a/mysql-test/t/information_schema2.test +++ b/mysql-test/t/information_schema2.test @@ -7,3 +7,16 @@ select variable_name from information_schema.session_status where variable_name select variable_name from information_schema.session_variables where variable_name = (select variable_name from information_schema.session_variables where variable_name = 'basedir'); +# +# information_schema tables inside subqueries, they should not be re-populated +# (i_s.columns needs to scan i_s itself, creating a tmp table for every i_s +# table. if it's re-populated, it'll do that multiple times) +# +create table t1 (a char); +insert t1 values ('a'),('t'),('z'); +flush status; +select a, exists (select 1 from information_schema.columns where table_schema=concat('tes',a)) from t1; +# fix the result in ps-protocol +--replace_result 44 43 +show status like 'created_tmp_tables'; +drop table t1; |